Coustic XM6 Manuel d'utilisateur télécharger pdf (Page 44)

To be ANSI/TIA-470.130-C

A.2 Receive Noise Curve 771

The A-weighting curve is defined in ANSI S1.4-1983 (Reaff. 2001) 772

773

Table A.3 – A-weighting curve 774

775

Frequency (Hz) A-Weighting Frequency (Hz) A-Weighting Frequency (Hz) A-Weighting

12.5 -63.4 125

-16.1

1250

0.6

16 -56.7 160

-13.4

1600

1.0

20 -50.5 200

-10.9

2000

1.2

25 -44.7 250

-8.6

2500

1.3

31.5 -39.4 315

-6.6

3150

1.2

40 -34.6 400

-4.8

4000

1.0

50 -30.2 500

-3.2

5000

0.5

63 -26.2 630

-1.9

6300

-0.1

80 -22.5 800

-0.8

8000

-1.1

100 -19.1 1000

0.0

10000

-2.5

12000

-4.3

16000

-6.6

20000

-9.3

776

Receive Noise Weighting Curve

-85.0

-75.0

-65.0

-55.0

-45.0

-35.0

-25.0

-15.0

-5.0

5.0

10 100 1000 10000

Frequency (Hz)

A-Weighting

777

Figure A.2 – A-weighting noise weighting curve 778

1 2 ... 39 40 41 42 43 44 45 46 47 48 49 ... 58 59

ELECOMMUNICATIONS INDUSTRY 1
SSOCIATION 1
To be ANSI/TIA-470.130-C 6
2 SCOPE 1 11
3 REFERENCES 16 12
3.1 NORMATIVE REFERENCES 23 12
BBREVIATIONS AND ACRONYMS 56 14
4.2 DEFINITIONS 83 15
5 TECHNICAL REQUIREMENTS 162 17
5.2 GENERAL 181 17
5.3 TEST CIRCUITS 246 19
5.4 SEND PERFORMANCE 325 25
Floating Mask 26
0 6 17 to 1 27
2.7 8 19 to 3 27
4.6 10 21 to 5 27
-20 dB +/- 3.0 dB 28
+10 dB +/- 2.0 dB 28
-10 dB +/- 2.0 dB 28
300 5% n/a 29
500 5% 10% 29
800 5% n/a 29
1000 5% 10% 29
5.5 RECEIVE PERFORMANCE 506 32
Desired Low Desired High 33
Mandatory Low Mandatory High 33
0 –5 +3 to –10 0 to –10 34
2.7 –3 +5 to –8 +2 to –8 34
4.6 –1 +7 to –6 +4 to –6 34
-30 dB +/- 4.0 dB 35
300 5% 10% n/a 36
500 5% 10% 10% 36
800 5% 10% n/a 36
1000 5% 10% 10% 36
IDETONE PERFORMANCE 690 39
5.7 ACOUSTIC STABILITY 729 40
Psophometric C-Message 43
Receive Noise Weighting Curve 44
10 0 05(/ ) 45
DLCs 860 51
LRs (dB) 52
Hierarchy 930 53
100Hz 1K 10K 58

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Coustic XM6 Manuel d'utilisateur Page 44

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